题目内容
溶氧的水平分布主要受到风力影响,无风时,同一水层溶氧分布大体均匀;有风时,水平分布变化比较复杂。
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蒸馏-中和滴定法是测定养殖水体溶解氧的主要方法。
生活污水中的溶解氧可以使用碘量法。
冬季冰封期,池塘增氧的有效措施有扫雪和打冰眼。
Dietions: There is a psse with 10 banks. Please read it caeuly and solet one word from the word bank below to fll in the blanks appropriately.approachintroducesimplypressure thoughtfulwherepromote willing in commonbased uponThere are lots of ways to meet new fiends, and once you have decided that you are no longergoing to be shy, and that you are 1)_______to step outside of the places where you are more comfortable, you will be able to 2)________new people quite easily.First of all, remember that a good friendship is 3)_________interests, so if you are looking to make friends, start to join clubs or go places 4)_______you have interest. For instance, if youlike to play sports, join a sports team or afer school sports club.If you have interests in music or witing. join clubs or organizations that 5)____________thethings that you are interested in. When you see someone in a place like that, and you think thatthey look nice, it is always a good idea to 6) ______________go up to them and 7)___________yourself.Don't put too much 8)_________on yourself, and remember that friendships don't always happeninstantly. Simply be 9)__________with the words that you choose, and ask interesting questions sothat you can start a conversation. You might find that you have much more 10)___________than youwould think.
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